YIMAI ARD Elevator Emergency Rescue Device | Automatic Rescue Device for Power Outage
The YIMAI ARD (Automatic Rescue Device) is a specialized elevator emergency power solution designed to safely rescue trapped passengers during power outages. It automatically detects power failures, drives the elevator to the nearest floor, and opens the doors, ensuring passenger safety and compliance with global elevator safety standards.
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Product Overview
The YIMAI ARD (Automatic Rescue Device) is a professional elevator emergency rescue system engineered to prevent passenger entrapment during unexpected power outages. When the main power supply fails, the ARD immediately takes over, using its built-in battery pack to drive the elevator car to the nearest floor, align it precisely, and open the doors automatically. This ensures passengers can exit safely without manual intervention, meeting strict international elevator safety regulations (EN 81-1/2, GB 7588, etc.). Compatible with most elevator control systems, it is an essential safety upgrade for passenger and freight elevators in commercial buildings, hospitals, and residential complexes.
Core Technical Advantages
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Automatic Rescue OperationThe ARD continuously monitors the main power supply. In the event of a power failure, it activates within seconds, seamlessly taking over the elevator’s control system. It drives the elevator car to the nearest floor at a slow, safe speed (≤0.3m/s), aligns it with the door zone, and opens the doors to allow passengers to exit—all without human operation.
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Wide CompatibilityIt is compatible with nearly all types of elevator control systems, including VVVF drives, relay control systems, and integrated controllers from major manufacturers (e.g., Otis, Schindler, Mitsubishi, Thyssenkrupp). No major modifications to the elevator’s original wiring are required, making installation quick and cost-effective.
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Intelligent Battery Management System (BMS)The built-in high-capacity battery pack (lead-acid or lithium-ion) is managed by an intelligent BMS that:
- Monitors battery state of charge (SoC) and health (SoH)
- Provides over-charge / over-discharge / over-current / short-circuit protection
- Automatically maintains battery charge during normal operation
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Ensures reliable performance even after long periods of standby
This guarantees the system is always ready to respond to power outages.
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Precision Leveling & Door ControlThe ARD uses the elevator’s existing position sensors and encoders to achieve precise leveling accuracy (±5mm), ensuring the car is perfectly aligned with the floor. It then sends a signal to the door operator to open the doors automatically, preventing passengers from being trapped between floors.
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Comprehensive Safety & Fault DetectionThe system includes multiple safety features:
- Overload protection to prevent operation under excessive load
- Over-speed protection to limit rescue speed to safe levels
- Fault self-diagnosis and alarm (audible/visual) for system malfunctions
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Manual override function for emergency manual operation
These features ensure the system operates safely under all conditions.
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Robust & Durable DesignHoused in a heavy-duty metal enclosure with IP54 protection rating, the ARD is resistant to dust, moisture, and mechanical impact, making it suitable for installation in elevator machine rooms or control cabinets. The compact design saves valuable space in crowded equipment rooms.
